Creatine Gut Ache?

Whats goin on guys. I take ( what i believe ) to be very basic supplements, but from time to time i swear i can feel my guts hurt haha, not sure if anyone else has had this.

Supplements:

pre workout= 2 scoops Xpand energized

Post workout= 1 scoop controlled labs Magnitude
protein shake

I also take vitamins before bed and usually consume over a gallon of water a day, any advice?

Yes to creatine and gut ache, happens when I don’t take it with simple carbs more.

I dont take creatine but I do get gut ache - probably because I am on a low carb diet so my guts arent stuffed full of crap to push out